Retainer plate of top heater for wafer processing furnace



FIG. 1 is a front, top and right side perspective view of a retainer plate of top heater for wafer processing furnace showing our new design;

FIG. 2 is a front elevational view thereof;

FIG. 3 is a left side elevational view thereof;

FIG. 4 is a right side elevational view thereof;

FIG. 5 is a top plan view thereof; and

FIG. 6 is a bottom plan view thereof.

FIG. 7 is a rear elevational view thereof; and,

FIG. 8 is a cross-sectional view taken along line 8-8 in FIG. 2. 

CLAIM The ornamental design for a retainer plate of top heater for wafer processing furnace, as shown and described. 